@mixin cardBg($leftColor, $rightColor) {
  background: -webkit-linear-gradient(to right, $leftColor, $rightColor);
  background: -o-linear-gradient(to right, $leftColor, $rightColor);
  background: -moz-linear-gradient (to right, $leftColor, $rightColor);
  background: linear-gradient(to right, $leftColor, $rightColor);
  // box-shadow: 0 5px 10px $rightColor;
}
